试样称量误差对小麦硬度指数的影响  

Weighing Error Impact on Wheat Hardness Index

作　　者：吴存荣[1] 唐怀建[1] 

机构地区：[1]河南工业大学粮油食品学院,郑州450052

出　　处：《中国粮油学报》2010年第6期102-106,113,共6页Journal of the Chinese Cereals and Oils Association

基　　金：国家标准制修订项目(20071595-T-449)

摘　　要：依据GB/T 21304—2007《小麦硬度测定硬度指数法》规定的测定方法,以小麦硬度指数测定技术为指导,使用JYDB100-40型小麦硬度指数测定仪,对混合小麦、软质小麦、硬质小麦和加麦2号四种样品,分别分析试样称量精度从（±0.01~±0.9）g对硬度指数测定值的影响。结果显示,同一品种的样品在不同试样质量所测得硬度指数数值的绝对误差不大于1的前提下,当混合小麦试样质量在（25.00±0.3）g时,软质小麦试样质量在（25.00±0.09）g时,硬质小麦试样质量在（25.00±0.9）g时,所测定的硬度指数变化范围均在允许误差范围内。综合结论为：试样在不大于±0.09g称量误差范围内,各品种小麦的硬度指数值都没有超出标准允许的误差范围。建议对GB/T 21304—2007规定的样品称量误差±0.01 g的精度要求,可以适当放宽到±0.09 g。Based on GB/T 21304-2007 ＂Determination of Wheat Hardness,the Hardness Index Method,＂ using JYDB100-40 wheat hardness index tester,taking samples from four types of wheat,namely mixed wheat,soft wheat,hard wheat,and Canadian wheat,the impact of sample weighing accuracy on hardness index values were anaˉlyzed from precision error of ± 0.01g to ± 0.9g.Results： The premises is set as that the absolute error of hardness index values is permit not more than 1 for the samples of the same type but different quality.When the sample mass of mixed wheat is at（25.00 ± 0.3）g,when the sample mass of soft wheat is at（25.00 ± 0.09）g,and when the sample mass of hard wheat is at（25.00 ± 0.9）g,the changes of the hardness index value are all in the scope of the permissible error.The General conclusion is that,when the sample weighing error is not more than ± 0.09g,the hardness index for various types of wheat is not beyond the scope of permissible error.It is proposed that the sample weighing error of ± 0.01g stated by GB/T 21304-2007 may be appropriately relaxed to ± 0.09g.

关 键 词：称量精度 小麦硬度 硬度指数 

分 类 号：TS210.7[轻工技术与工程—粮食、油脂及植物蛋白工程]